F355 Slow Down Light | FerrariChat

F355 Slow Down Light

Discussion in '348/355' started by Hotzos, Apr 9, 2006.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Hotzos

    Hotzos Formula 3 Owner Silver Subscribed

    Joined:
    Oct 19, 2004
    Messages:
    1,060
    Location:
    Parker, Colorado
    Full Name:
    Mark Gomez
    I had not drive my 96 F355B in a week. Went to start it up today and the Slow Down light started blinking. I shut the car off and restarted it....some problem. It goes solid for a couple seconds after i shut the car off. When i start it again, it starts blinking.

    The car was sitting for a week so i know the cats were not hot.

    First time i am seeing this.

    Any ideas? Advice?
     
    Hotzos, Apr 9, 2006
    #1
  2. Vitamin_J

    Vitamin_J Formula Junior

    Joined:
    Feb 4, 2006
    Messages:
    281
    I remembering reading an older post on the board in which an 02 sensor went bad causing triggering the light.

    I'll try to dig it up. Good luck.
     
    Vitamin_J, Apr 9, 2006
    #2
  3. LetsJet

    LetsJet F1 Veteran Owner

    Joined:
    May 24, 2004
    Messages:
    9,334
    Location:
    DC/LA/Paris/Haleiwa
    Full Name:
    Mr.
    Owners Manual

    "If the light flashes, the catalytic converter temp is too high, reaching a level of 1724 + 68F (940 +20C)"

    Not sure what else it could be....
     
    LetsJet, Apr 10, 2006
    #3
  4. Hotzos

    Hotzos Formula 3 Owner Silver Subscribed

    Joined:
    Oct 19, 2004
    Messages:
    1,060
    Location:
    Parker, Colorado
    Full Name:
    Mark Gomez
    Agreed but in this case, i had just started the car up after it had been sitting for a week.

    Vitamin J -- Any luck on the 02 sensor?

    Anyone have other ideas or things i should try to chase?

    Cheers
    Mark
     
    Hotzos, Apr 10, 2006
    #4
  5. LetsJet

    LetsJet F1 Veteran Owner

    Joined:
    May 24, 2004
    Messages:
    9,334
    Location:
    DC/LA/Paris/Haleiwa
    Full Name:
    Mr.
    I understand Mark, but that's all I know. Good luck and keep us posted as to what you find out.
     
    LetsJet, Apr 10, 2006
    #5
  6. petrone01

    petrone01 Karting

    Joined:
    Oct 17, 2005
    Messages:
    100
    Location:
    Concord, CA
    Full Name:
    Carmine
    I believe that the O2 sensor does not come into play until the car is in motion and will start the permissives in the ECU. The temp sensor is the one that will trigger this slow down light on start up. Check the thermocouple, wiring, connection etc. Good place to start. It is a mV signal that if the connection goes (dirty,etc) it will loose a signal and go to a default high temp reading.

    Carmine
     
    petrone01, Apr 10, 2006
    #6
  7. Llenroc

    Llenroc F1 Veteran Rossa Subscribed

    Joined:
    Jun 9, 2004
    Messages:
    5,488
    Location:
    Colorado
    Full Name:
    Vern
    Its not uncommoon for the ECU that operates the slow down lights to malfuction, which is what yours are doing by the way you have described the situation. Do a search on the subject it has been discussed many times. Regards, Vern
     
    Llenroc, Apr 10, 2006
    #7
  8. Ricambi America

    Ricambi America F1 World Champ Sponsor Owner

    Joined:
    Dec 7, 2003
    Messages:
    16,443
    Location:
    Winston Salem, NC

    ^^^ What he said, times 2.

    http://ricambiamerica.com/product_info.php?products_id=208023
     
    Ricambi America, Apr 10, 2006
    #8
  9. Crawford

    Crawford Formula 3

    Joined:
    Mar 5, 2003
    Messages:
    1,294
    Location:
    Nashville, TN
    Full Name:
    Crawford White
    Exact same thing happened to me a couple weeks ago. Slow down light started blinking as soon as I started the car. The light then went off as I was headed to my mechanic...
     
    Crawford, Apr 10, 2006
    #9
  10. Hotzos

    Hotzos Formula 3 Owner Silver Subscribed

    Joined:
    Oct 19, 2004
    Messages:
    1,060
    Location:
    Parker, Colorado
    Full Name:
    Mark Gomez

    Haha...same thing happened to me....i was on the freeway heading to the dealer and it stopped blinking. I guess i will sit tight for now and see if comes back. (I have a feeling there is a crack on the CAT ECU that let some water in.)
     
    Hotzos, May 2, 2006
    #10
  11. racespecferrari

    racespecferrari F1 Veteran

    Joined:
    Jan 31, 2006
    Messages:
    7,583
    Location:
    Suffolk, Uk
    Full Name:
    Pete.G By The Sea
    My friends has this problem but from cold, it stay on all the while
     
    racespecferrari, May 2, 2006
    #11
  12. Jerrari

    Jerrari F1 Veteran

    Joined:
    Jul 24, 2001
    Messages:
    5,469
    Location:
    Michigan
    Full Name:
    Jerry Wiersma
    Mine on the TR is doing the same thing, stays on for 10 annoying minutes then goes off.
     
    Jerrari, May 2, 2006
    #12

Share This Page